package com.sky.controller.user;


import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishContorller")
@RequestMapping("/user/dish")
@Api(tags = "C端-菜品浏览接口")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品信息
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId){
        log.info("查询分类id为{}的菜品", categoryId);
        String key = "dish_list_" + categoryId;
        //缓存优化
        //查询MySQL数据库前，先判断redis缓存中是否存在数据
        List<DishVO> dishVOList = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(dishVOList != null&&dishVOList.size()>0){
            return Result.success(dishVOList);
        }

        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);
        List<DishVO> list = dishService.listWithFlavor(dish);


        //没有数据， 查询MySQL数据库后存入redis缓存中
        redisTemplate.opsForValue().set(key, list);
        return Result.success(list);

    }

}
